* {
    margin: 0;
    padding: 0;
    /* outline: 1px solid red; */
}

body {
    background-color: #f9f9f9;
    color: #333;
    max-width: 800px;
    margin: 40px auto;
    padding: 20px;
    line-height: 1.6;
}

h1 {
    text-align: center;
    color: #444;
}

p a {
    color: #007bff;
    text-decoration: none;
}

p a:hover {
    text-decoration: underline;
}

ul {
    list-style: none;
    padding: 0;
}

ul li {
    background: #fff;
}

ul li:hover {
    background: #f1f1f1;
}

ul li a {
    font-weight: bold;
    color: #333;
    text-decoration: none;
    padding: 10px;
    display: block;
}

h2 {
    color: #333;
}

.box {
    background: #fff;
    padding: 15px;
    border-radius: 5px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    margin-top: 10px;
}

input[type="text"],
textarea {
    width: 85%;
    margin: 5px 0;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 16px;
}

button {
    width: 40px;
    background: #007bff;
    color: #fff;
    border-radius: 4px;
    cursor: pointer;
}

button:hover {
    background: #0056b3;
}

.back {
    margin-top: 10px;
}

.t1 {
    float: right;
    font-weight: normal;
    color: #999;
    font-size: 12px;
    margin-top: 10px;
    margin-left: 10px;
}

.nav {
    margin: 5px 0;
}